Improvement in furnaces for steam-boilers



D. T. CASEMENT..

Furnaces, for Steam-Boilers. A NOLSS. -i PatentedAprHl4,1874,-

AWITNESSES: i y i 'A4 W. @l MK/ BY MMV@ ATTORNEYS.

UNITED STATES PATENT OFFICE.

DANIEL T. OASEMENT, OF PAINESVILLE, OHIO.

IMPROVEMENT IN FURNACES FOR STEAM-BOILERS.

Specification forming part of Letters Patent N o. 149,638, dated April 14, 1874; application filed February '7, 1874.

To all whom it may concern:

Be it known that I, DANnsL T. CASEMENT, of Painesville, in the county of Lake and State of Ohio, have invented a new and useful Improvement in Furnaces for Steam-Boilers, of

which the following is a specification: Y

The invention consists in a system of inclined tubes in the upper part of the furnace for supporting metal balls, to facilitate the combustion of the gases by their impinging on the red-hot surfaces of the balls7 in which heat is stored up. The said tubes are arranged in two series, extending from the top or nearit on. opposite sides diagonally across and down Ward, crossing each other at the middle, forming chambers for storing the balls. They are arranged in this way to facilitate the fasten ing of them in the furnace-walls; also, the cleaning of them from time to time of the deposit that may result from the use of salty or lmy water.

Figure l is a longitudinal sectional elevation of a locomotive constructed according to my invention. Fig. 2 is a transverse sectional elevation-through the furnace, and Fig. 3 is an end elevation.

Similar vletters of reference indicate correspondin g parts.

A represents a tank, which is arranged in front of the boiler B, and presents the aps pearance of a prolongation of the latter be yond the iire-boX. The tank has an opening', O, and door4 D, and is used to temporarily weight the locomotive with water or sand for ascending steep grades. E represents the pipes or hollowr grates, as I now propose to arside, entering portions G of the furnace arranged at right angles to them, and fasten in any approved way, say by riveting the endsY I over ferrules fitted in the plates. This is considercd an efficient mode of arrangement for circulation of the water, while it is very simple and cheap. Hand-holes may be made in the sidewalls of the furnace at the lower ends of the tubes, through which to insert Scrapers for cleaning out any deposit of salt, lime, or other sediment that may lodge in them. The furnace-grate I is supported on the 'bars J, eX- tending down through the bottom of the firebox under the sides and up along the outside, and havin g the upperportions K provided with teeth, with which the shafts L, extending along the sides to the front, gear for raisingand lowering the grate. In front of the boiler said shafts are connected, by an endless chain, M, and pulleys N, to be worked in unison, and one has a hand-crank, O.

' Having thus described my invention, I claim as new and desire to secure by Letters Pat-A ent VThe ball-holding tubes E,.arranged substan tially as 'represented in the drawings.

DAN. T. OASEMENT. 

